Key Laboratory of Clean Pulp & Papermaking and Pollution Control of Guangxi, College of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China.
Guangxi Bossco Environment Protection Technology Co., Ltd, Nanning 530007, PR China.
Bioresour Technol. 2022 Jan;344(Pt A):126232. doi: 10.1016/j.biortech.2021.126232. Epub 2021 Oct 28.
Microbiota quorum sensing (QS) induced by 3O-C6-HSL (N-(β-ketocaproyl)-DL-homoserine lactone) inhibited the calcification of anaerobic granular sludge (AnGS), and the mechanism of promoting the activity recovery of calcified AnGS was studied in this paper. Through research, it was speculated that 3O-C6-HSL acted on calcified AnGS residual microorganisms to trigger QS. It enriched many functional microorganisms. For example, it promoted the growth of Methanospirillum. The CO could be consumed quickly by Methanospirillum and reduced the calcium carbonate formation. The increase of microbial biomass would promote the activity of sludge. What's more, the pore size and porosity of sludge would increase, so the mass transfer channel will be broadened at same time. All those, could help the calcified AnGS quickly restore the activity and anaerobic system recover normal, which provided a new idea for the emergency rescue of anaerobic system in the future.
微生物群体感应（QS）被 3O-C6-HSL（N-（β-酮基己酰基）-DL-高丝氨酸内酯）诱导，抑制了厌氧颗粒污泥（AnGS）的钙化，本文研究了促进钙化 AnGS 活性恢复的机制。通过研究，推测 3O-C6-HSL 作用于钙化的 AnGS 残留微生物，触发 QS。它富集了许多功能微生物。例如，它促进了 Methanospirillum 的生长。Methanospirillum 可以快速消耗 CO，减少碳酸钙的形成。微生物生物量的增加将促进污泥的活性。此外，污泥的孔径和孔隙率增加，同时拓宽了传质通道。所有这些都有助于钙化的 AnGS 快速恢复活性，使厌氧系统恢复正常，为未来厌氧系统的紧急救援提供了新的思路。
